Re: minor e1000 bug

[Hans-Peter Jansen <hpj@urpla.net>]

Hi Ethan,

On Friday 19 December 2003 21:40, Ethan Weinstein wrote:
> I've noticed that the e1000 driver does not update the counters in
> /proc/net/dev as quickly as several other drivers I've tried, such
> as e100 (both the Becker driver, and Intel's), sk90lin, and 3c59x.
> These drivers seem to update the counters in a very timely fashion
> while the e1000 driver doesn't seem to update them for several
> seconds.  This is apparent in 2.6.0, and 2.4.xx. Is there an update

Every 2 seconds exactly.

I would also be interested in a statement from intel fellows on the 
reasoning behind this decision, since every user of gkrellm will 
notice some strange behaviour (value oscillating between 0 and 
throughput * 2). (Poor man's real time bandwidth management ;-). 

After being tired of cognitive interpretation of these values, I 
decided to fix it, which was pretty easy:

--- linux-2.4.20/drivers/net/e1000/e1000_main.c~    2003-08-03 00:40:21.000000000 +0200
+++ linux-2.4.20/drivers/net/e1000/e1000_main.c 2003-08-08 13:20:06.000000000 +0200
@@ -1390,7 +1390,7 @@
        netif_stop_queue(netdev);
 
    /* Reset the timer */
-   mod_timer(&adapter->watchdog_timer, jiffies + 2 * HZ);
+   mod_timer(&adapter->watchdog_timer, jiffies + HZ);
 }
 
 #define E1000_TX_FLAGS_CSUM        0x00000001


> interval that might be modified within the driver to fix this?  It
> screws up realtime bandwidth measurements for these cards.
>
>
> -Ethan

Enjoy,
Pete